Mondulkiri Robusta Sourcing: Geographic and Climatic Data

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Mondulkiri Robusta sourcing: geographic coordinates, altitude 400-800m ASL, rainfall 2000-2500mm, harvest Nov-Mar. Supply chain data for Cambodia coffee origins.

\# Mondulkiri Robusta Sourcing: Geographic and Climatic Data

Mondulkiri Robusta sourcing requires verifiable data on cultivation zones, harvest timing, and processing infrastructure. This province delivers 40–45% of Cambodia's total Robusta output, positioning it as the primary origin zone for procurement managers evaluating green bean supply reliability. Geographic isolation and altitude variance create distinct cup profiles within a single administrative region.

\## Geographic Boundaries and Cultivation Coordinates

Mondulkiri province spans approximately 14,288 km² in Cambodia's eastern highlands, bordered by Vietnam to the east and south. Primary Robusta cultivation occurs between \*\*12.4°N–13.1°N latitude\*\* and \*\*106.8°E–107.6°E longitude\*\*. Commercial production concentrates in six districts: Pechr Chenda, Keo Seima, Ou Reang, Sre Huy, Sen Monorom, and Krang Teh.

Altitude ranges directly impact bean density and maturation rates. Mondulkiri Robusta grows at \*\*400–800 meters above sea level (ASL)\*\*, with the majority of commercial plots situated between 500–650m ASL. This elevation bracket produces slower-maturing cherries compared to lowland Vietnamese Robusta zones (typically 200–400m ASL), resulting in denser bean structure and reduced defect rates when processing protocols are enforced.

Road access to processing stations varies by district. Sen Monorom district maintains paved National Road 76 connections to collection points, while northern districts rely on laterite roads subject to seasonal degradation during peak rainfall months (July–September).

\## Climatic Parameters: Rainfall and Temperature Distribution

Annual rainfall in Mondulkiri averages \*\*2,000–2,500mm\*\*, concentrated in a monsoon period from May through October. This distribution pattern allows natural irrigation during vegetative growth phases (June–September) and dry conditions during harvest (November–March). Rainfall consistency reduces dependency on artificial irrigation systems, lowering production costs relative to drier Cambodian provinces.

\*\*Temperature ranges:\*\*

\- Dry season minimum: 15–18°C (November–February)

\- Dry season maximum: 28–32°C

\- Wet season average: 22–26°C

These temperature parameters fall within optimal Robusta physiological thresholds (18–36°C), but morning temperatures below 18°C during December–January can slow cherry maturation by 7–10 days compared to standard harvest forecasts. Procurement timelines must account for this temperature-induced lag when coordinating container shipments.

Humidity during wet months exceeds 85%, necessitating mechanical drying infrastructure for washed-process lots. Farms relying solely on sun-drying experience extended drying times (14–18 days vs. 10–12 days in mechanical systems), increasing mycotoxin risk if parchment storage protocols fail.

\## Harvest Cycle and Processing Windows

\### Primary Harvest Period

Mondulkiri Robusta harvesting occurs from \*\*November through March\*\*, with peak volume arriving at collection stations between mid-December and late January. Harvest timing depends on altitude: lower-elevation plots (400–500m ASL) mature 2–3 weeks earlier than highland plots (700–800m ASL).

Smallholder farmers dominate production, with average plot sizes of 1.5–3 hectares. Selective picking occurs in 2–3 passes per season, with final passes capturing overripe cherries that often enter lower-grade commercial lots. Industrial buyers targeting CQI scores above 80 points should specify first-pass cherry procurement in supply agreements.

\### Processing Infrastructure and Moisture Content Standards

Wet-processing capacity in Mondulkiri has increased by 35% since 2020, with 18 operational washing stations now serving commercial buyers. These stations target \*\*moisture content specifications of 11–12%\*\* for parchment coffee prior to hulling, measured via standardized moisture meters (Wile, Dickey-John).

Green bean moisture at export readiness: \*\*12.5% maximum\*\*. Beans exceeding 13% moisture fail Cambodia export certification under MAFF (Ministry of Agriculture, Forestry and Fisheries) standards and present mold risk during ocean freight transit (typical 21–28 days to major Asian ports).

Dry-processed Robusta from Mondulkiri typically exhibits higher defect counts (Category 1 + Category 2 defects often exceed 8% by weight) and is not recommended for specialty-grade procurement channels.

\## Supply Chain Staging Points and Lead Times

Collection flows through Sen Monorom town, where consolidators aggregate smallholder volumes before transport to Phnom Penh exporters or direct delivery to in-country roasters. Transport time from farm gate to capital warehouses: \*\*6–9 hours\*\* via National Road 76 (212 km), assuming dry-season road conditions.

\*\*Typical lead times for container readiness:\*\*

These durations assume no disruption in electricity supply at processing stations—a variable that occasionally extends drying phases by 3–5 days during transformer failures in rural districts.

\## Soil Composition and Bean Chemistry Indicators

Mondulkiri soils are predominantly \*\*red basalt-derived latosols\*\*, rich in iron oxide and naturally acidic (pH 4.5–5.5). Phosphorus deficiency is common, requiring managed fertilization programs to sustain yields above 1.2 tons per hectare. Organic matter content averages 2.5–3.8%, supporting microbial activity that influences fermentation consistency during wet processing.

Robusta from basalt soils in this province typically presents chlorogenic acid content ranging \*\*6.5–8.2%\*\* (dry basis), measured via HPLC analysis. This range sits at the lower end of global Robusta averages (7–10%), contributing to reduced astringency in final cup profiles—a factor relevant for blending applications where smoother Robusta character is specified.

Procurement decisions tied to Mondulkiri Robusta sourcing should prioritize suppliers with documented moisture control, altitude-specific lot separation, and mechanical drying access. Geographic data alone does not guarantee bean quality, but it establishes the environmental parameters within which processing discipline either succeeds or fails.